Tribological Investigation of Self-Healing Composites Containing Metal/Polymer Microcapsules
Tribological Investigation of Self-Healing Composites Containing Metal/Polymer Microcapsules
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DOI：
10.30919/esmm5f469
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发表时间：
2021-05
期刊：
影响因子：
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通讯作者：
Dawei Sun;Jianhua Yan;Xiaoyue Ma;Mingzhang Lan;Zi-ming Wang;S. Cui;Jinglei Yang
中科院分区：
文献类型：
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作者：
Dawei Sun;Jianhua Yan;Xiaoyue Ma;Mingzhang Lan;Zi-ming Wang;S. Cui;Jinglei Yang
系统地研究了金属微胶囊和聚合物微胶囊环氧复合材料的摩擦学性能。金属微胶囊和聚合物微胶囊均表现出明显的核壳结构。金属微胶囊和聚合物微胶囊的直径分别为200.7±44.5 μm和185.2±44.2 μm，相应的芯分数分别为23.5±1.3 wt%和75.0±2.1 wt%。含金属微胶囊的环氧复合材料的抗压强度高于含聚合物微胶囊的复合材料，但其抗压模量随微胶囊浓度的增加相对稳定，而含聚合物微胶囊的复合材料的抗压模量逐渐降低。此外，含聚合物微胶囊的环氧复合材料的摩擦系数（小于0.1）比含金属微胶囊的环氧复合材料的摩擦系数（约0.55）低几倍。含聚合物微胶囊的环氧复合材料的摩擦系数随着微胶囊浓度的增加而减小，而含金属微胶囊的环氧复合材料的摩擦系数随着微胶囊浓度的增加而增大。虽然含金属微胶囊的复合材料强度和模量高于含聚合物微胶囊的复合材料，但在不同的法向载荷和速度下，含金属微胶囊的复合材料的磨损损失（包括磨损深度和磨损宽度）远大于含聚合物微胶囊的复合材料。
The tribological properties of epoxy composites containing metal microcapsules and polymer microcapsules were investigated systematically. Both metal microcapsules and polymer microcapsules showed obvious core shell structures. The diameter of metal microcapsules and polymer microcapsules was 200.7±44.5 μm and 185.2±44.2 μm with a corresponding core fraction of 23.5±1.3 wt% and 75.0±2.1 wt%, respectively. The epoxy composites containing metal microcapsules possessed higher compressive strength than that containing polymer microcapsules, but its compressive modulus remained stable relatively with microcapsule concentrations, comparing with the gradual decrease of compressive modulus of composites containing polymer microcapsules. Besides, the friction coefficient of epoxy composites containing polymer microcapsules (less than 0.1) was several times lower than that of epoxy composites containing metal microcapsules (around 0.55). The friction coefficients of epoxy composites containing polymer microcapsules were decreased under higher microcapsules concentrations, but that of epoxy composites containing metal microcapsules was increased with microcapsules concentrations. Although composites containing metal microcapsules had higher strength and modulus than that containing polymer microcapsules, its wear loss including wear depth and wear width was far more than the composites containing polymer microcapsules under different normal loads and velocities.